helpers.py 文件源码

def get_avg_cpu_load(self):
        """Returns the average cpu load since the last call

        Returns the user and system time fraction per second as tuple or None
        """
        if not self.start_wall_time:
            rusage = resource.getrusage(resource.RUSAGE_SELF)
            self.start_wall_time = time.time()
            self.start_cpu_user_time = rusage.ru_utime
            self.start_cpu_sys_time = rusage.ru_stime
            return None
        else:
            now = time.time()
            rusage = resource.getrusage(resource.RUSAGE_SELF)
            time_delta = now-self.start_wall_time
            avg_user_time = (rusage.ru_utime-self.start_cpu_user_time)/time_delta
            avg_sys_time = (rusage.ru_stime-self.start_cpu_sys_time)/time_delta
            self.start_wall_time = now
            self.start_cpu_user_time = rusage.ru_utime
            self.start_cpu_sys_time = rusage.ru_stime
            return avg_user_time, avg_sys_time